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The Utah State University Materials Physics Group (MPG) performs state-of-the-art ground-based testing of space environment effects on aerospace materials. These include electrical charging and electron transport properties of both conducting and insulating materials; they emphasize studies of electron emission, conductivity, luminescence, and electrostatic discharge. Our research group consists of faculty, graduate, and undergraduate researchers. Publications and presentations are archived here.

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2010

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Charge Dynamics in Highly Insulating Space Craft Materials, Alec Sim and JR Dennison

Parameterization of Temperature, Electric Field, Dose Rate and Time Dependence of Low Conductivity Spacecraft Materials Using a Unified Electron Transport Model, Alec Sim and JR Dennison; Parameterization of Temperature, Electric Field, Dose Rate and Time Dependence of Low Conductivity Spacecraft Materials Using a Unified Electron Transport Model

Temperature and Endurance Time of Electrostatic Field Strengths of Polymeric Spacecraft Insulators, Charles Sim, Alec Sim, Douglas Ball, and JR Dennison; Temperature and Endurance Time of Electrostatic Field Strengths of Polymeric Spacecraft Insulators

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Approximation of Range in Materials as a Function of Incident Electron Energy, Gregory Wilson and JR Dennison; Proceedings of the 11th Spacecraft Charging Technology Conference

2009

Time Dependent Conductivity of Spacecraft Materials, Justin Dekany and JR Dennison; Time Dependent Conductivity of Spacecraft Materials

Reduction and Characterization of Error in Low Current Measurements, Justin Dekany, JR Dennison, and Alec Sim; Reduction and Characterization of Error in Low Current Measurements

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Reduction and Characterization of Error in Low Current Measurements, Justin Dekany, JR Dennison, and Alec Sim; American Physical Society Four Corner Section Meeting

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Characterization of Electrical Materials Properties Related to Spacecraft Charging, JR Dennison; Radiation capabilities for the Europa Jupiter System Missions Instrument Workshop

Testing of Materials Electrical Properties and Radiation Effects at Utah State University, JR Dennison; Testing of Materials Electrical Properties and Radiation Effects at Utah State University

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Flight Experiments on the Effects of Contamination on Electron Emission of Materials, JR Dennison, Joshua L. Hodges, Jeff Duce, and Amberly Evans; 1st AIAA Atmospheric and Space Environments Conference

Flight Experiments on the Effects of Contamination on Electron Emission of Materials, JR Dennison, Joshua L. Hodges, J. Duce, and Amberly Evans; Flight Experiments on the Effects of Contamination on Electron Emission of Materials

The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials, Amberly Evans and JR Dennison; The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials

The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials, Amberly Evans and JR Dennison; The Effects of Surface Contamination and Roughening on Diffuse Optical Reflection and Photoyields on Spacecraft Materials

Space Research Projects for the International Space Station, Kyle Hodgson and JR Dennison; Space Research Projects for the International Space Station

Flux and Fluence Dependence of Electron Emission for High-yield, High-resistivity Materials: Implications for Spacecraft Charging, Ryan Hoffman, JR Dennison, and Jennifer Albretsen; Proceedings of the 47th American Institute of Aeronautics and Astronautics Meeting on Aerospace Sciences

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Measurement of Charging and Discharging of High Resistivity Materials Spacecraft Materials by Electron Beams, Ryan Hoffman, Joshua L. Hodges, Jesse Hayes, and JR Dennison; 47th American Institute of Aeronautics and Astronomics Meeting on Aerospace Sciences, Orlando, FL

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Thin Wire Nucleate Boiling of Water in Sustained Microgravity, Justin P. Koeln, Heng Ban, and JR Dennison; Proceedings of the 23nd Annual AIAA/USU Conference on Small Satellites

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Bubble Behavior in Nucleate Boiling Experiment Aboard the Space Shuttle, Justin P. Koeln, Jeffrey C. Boulware, and Heng Ban; 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Microgravity Experiments for the ISS, Justin Koeln, Jan Sojka, and JR Dennison; Microgravity Experiments for the ISS

Space Charging of JWST Composites, Bob Meloy and JR Dennison; Space Charging of JWST Composites

Photoelectric Charging by Ultraviolet Light of a Lunar Dust Simulant in a Microgravity Environment, Troy Munro and JR Dennison; Photoelectric Charging by Ultraviolet Light of a Lunar Dust Simulant in a Microgravity Environment

Effects of Radiation Induced Conductivity on Electrostatic Discharge in Insulating Materials, Jennifer A. Roth, Ryan Hoffman, and JR Dennison; Effects of Radiation Induced Conductivity on Electrostatic Discharge in Insulating Materials

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Relevance of Ground-based Electron-Induced Electrostatic Discharge Measurements to Space Plasma Environments, Jennifer A. Roth, Ryan Hoffman, JR Dennison, and Jonathon R. Tippetts; 1st AIAA Atmospheric and Space Environments Conference

Charge Dynamics in Disordered Insulating Materials, Alec Sim and JR Dennison; Charge Dynamics in Disordered Insulating Materials

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Temperature Dependence of Electrostatic Breakdown of Polymeric Insulators, Charles Sim and JR Dennison; American Physical Society Four Corner Section Meeting

2008

Adsorption Isotherms for Nitrogen (N2) on Graphite, Jennifer Albretsen, Ethan Lindstrom, and JR Dennison; Adsorption Isotherms for Nitrogen (N2) on Graphite

Temperature Dependence of Kapton HN Breakdown Voltages, Dan Arnfield and JR Dennison; Temperature Dependence of Kapton HN Breakdown Voltages

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Resistivity As Dynamic Behavior in Low Density Polyethylene, J. Brunson and J.R Dennison; proceedings of the 13th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Measuring Thermal Emissivity with Specific Application to Spacecraft Design, Alex Chanson and JR Dennison; Measuring Thermal Emissivity with Specific Application to Spacecraft Design

Radiation Induced Conductivity Measurements of Insulating Materials at Low Temperatures, J. Corbridge, JR Dennison, and A. Hunt; Radiation Induced Conductivity Measurements of Insulating Materials at Low Temperatures

Transient Conductivity of Kapton HN, Justin Dekany, JR Dennison, and Steven Hart; Transient Conductivity of Kapton HN

Temperature, Electric Field and Dose Rate Dependence of the Conductivity of Highly Resistive Materials for Use on the James Webb Space Telescope, JR Dennison; Temperature, Electric Field and Dose Rate Dependence of the Conductivity of Highly Resistive Materials for Use on the James Webb Space Telescope

The Trials and Tribulations of Measuring Electron Yields of Extreme Insulators, JR Dennison; The Trials and Tribulations of Measuring Electron Yields of Extreme Insulators

USU JWST Induced Electrostatic Breakdown ICIM Samples, JR Dennison; USU JWST Induced Electrostatic Breakdown ICIM Samples

Electron Yields of Highly Insulating Materials Under Varying Electron Fluence, JR Dennison and R. C. Hoffmannn; Electron Yields of Highly Insulating Materials Under Varying Electron Fluence

Effects of Radiation Induced Conductivity on Samples Charged by Particle Beams, JR Dennison, Ryan Hoffmannn, Jennifer A. Roth, and Alec Sim; Effects of Radiation Induced Conductivity on Samples Charged by Particle Beams

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Low-Fluence Electron Yields of Highly Insulating Materials, Ryan Hansen and JR Dennison; Proceedings of the 22nd Annual AIAA/USU Conference on Small Satellites

Measuring the Surface Charge on an Insulated Sample in Vacuum, Jesse Hayes, Joshua Hodges, Ryan Hoffmann, and JR Dennison; Measuring the Surface Charge on an Insulated Sample in Vacuum

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Launch and Deployment of the Misse-6 Payload: State of Utah Space Environment & Contamination Study, Joshua Hodges, Jeff Duce, and JR Dennison; 13th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Launch and Deployment of the Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS), Joshua Hodges, Jeff Duce, and JR Dennison; Launch and Deployment of the Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS)

Low-Fluence Electron Yields of Highly Insulating Materials, Ryan Hoffman and JR Dennison; Low-Fluence Electron Yields of Highly Insulating Materials

Observation and Characterization of Electrostatic Discharge in Insulating Materials Induced by Electron Beam Bombardment, Jennifer A. Roth, Ryan Hoffmannn, and JR Dennison; Observation and Characterization of Electrostatic Discharge in Insulating Materials Induced by Electron Beam Bombardment

2007

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Investigating the Photoyield of Spacecraft Materials, Jennifer Albretsen, Ryan Hoffmann, and JR Dennison; American Physical Society Four Corner Section Meeting

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Hopping Conductivity in Low-Density Polyethylene, Jerilyn Brunson and JR Dennison; Proceedings of the 12th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Charging and Discharging of Highly Resistive Spacecraft Materials, JR Dennison; Charging and Discharging of Highly Resistive Spacecraft Materials

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Dependence of Resistivity in Low-Density Polyethylene on Space Environment Parameters, JR Dennison and J. Brunson; 10th Spacecraft Charging and Technology Conference

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LOW TEMPERATURE MEASUREMENTS OF RESISTIVITY IN LOW-DENSITY POLYETHYLENE, JR Dennison and J. Brunson; NASA Rocky Mountaint Space Grant Consortium Symposium

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Triggering Threshold Spacecraft Charging with Changes in Electron Emission from Materials, JR Dennison, R. C. Hoffmann, and J. Abbott; 45th American Institute of Aeronautics and Astronomics Meeting on Aerospace Sciences, Reno, NV

Triggering Threshold Spacecraft Charging with Changes in Electron Emission from Materials, JR Dennison, R. C. Hoffmann, and J. Abbott; Triggering Threshold Spacecraft Charging with Changes in Electron Emission from Materials

Electronic property measurements and charging modeling of a ceramic-coated heat shield, M. M. Donegan, J. L. Sample, D. E. King, K. Caruso, D. Drewry, and JR Dennison; Electronic property measurements and charging modeling of a ceramic-coated heat shield

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Deep Dielectric Charging of Spacecraft Polymers by Energetic Protons, Nelson W. Green and JR Dennison; 10th Spacecraft Charging and Technology Conference

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Resistivity of Kapton E at Intermediate Time Scales Following High-Energy Electron Irradiation, S Hart, JR Dennison, J Brunson, and Jodie C. Gillespie; American Physical Society Four Corner Section Meeting

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Electron-Induced Electron Yields of Uncharged Insulating Materials, Ryan Carl Hoffmann, JR Dennison, and Jennifer Albretsen; 10th Spacecraft Charging and Technology Conference

2006

From Whence Come the Electrons?, Jonathan Abbott, JR Dennison, Jason Kite, Ryan Hoffmann, and R. E. Davies; From Whence Come the Electrons?

E-Field Conditioning and Charging Memory in Low Density Polyethylene, Jerilyn Brunson and JR Dennison; E-Field Conditioning and Charging Memory in Low Density Polyethylene

E-Field Dependent Conduction in Low-Density Polyethylene, Jerilyn Brunson and JR Dennison; E-Field Dependent Conduction in Low-Density Polyethylene

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E-Field Dependent Conduction in Low-Density Polyethylene, Jerilyn Brunson and JR Dennison; 11th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Measurements of the Radiation Induced Conductivity of Insulating Polymeric Materials for the James Webb Space Telescope, J. Corbridge, JR Dennison, J. Hodges, R. C. Hoffmann, J. Abbott, A. Hunt, and R. Spaulding; Measurements of the Radiation Induced Conductivity of Insulating Polymeric Materials for the James Webb Space Telescope

Instrumentation for Radiation Induced Conductivity Measurements of Insulating Materials, J. Corbridge, J. Hodges, JR Dennison, R. C. Hoffmann, J. Abbott, S. Hart, A. Thomas, J. Brunson, A. Hunt, and R. Spaulding; Instrumentation for Radiation Induced Conductivity Measurements of Insulating Materials

Amusement Park Physics, Ashley Crookston and JR Dennison; Amusement Park Physics

Electron emission and resistivity of Materials for the NASA Solar Probe Mission in Extreme Thermal and Radiation Environments, JR Dennison; Electron emission and resistivity of Materials for the NASA Solar Probe Mission in Extreme Thermal and Radiation Environments

Study of High Resistivity Materials Used for JWST at Low Temperature, JR Dennison; Study of High Resistivity Materials Used for JWST at Low Temperature

The Charge Collector: Just a Drop in the Bucket, JR Dennison; The Charge Collector: Just a Drop in the Bucket

Electron Emission Testing of Solar Sail Nanocomposite Materials, JR Dennison, Jonathan Abbott, Ryan Hoffmann, and Jodie Corbridge; Electron Emission Testing of Solar Sail Nanocomposite Materials

Design and Pre-Flight Testing of the State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment, JR Dennison, J. W. Burns, C. D. Thomson, L. Pearson, L. Davis, R. S. Hyde, James S. Dyer, J. Duce, J. Hodges, and J. Geddes; Design and Pre-Flight Testing of the State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment

The State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment, JR Dennison, James S. Dyer, J. Duce, J. Hodges, J. W. Burns, C. D. Thomson, L. Pearson, L. Pearson, L. Davis, and R. S. Hyde; The State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Experiment

Recent Advances in Measurements Related to the Charging and Discharging of Spacecraft Materials, JR Dennison and Nelson Green; Recent Advances in Measurements Related to the Charging and Discharging of Spacecraft Materials

Measurement of the Electron Yields of Highly Insulating Materials, JR Dennison, R. C. Hoffmann, and J. Abbott; Measurement of the Electron Yields of Highly Insulating Materials

The Emission Angle and Incident Energy Dependence of the Boundary between Secondary and Backscattered Electrons, JR Dennison and Jason Kite; The Emission Angle and Incident Energy Dependence of the Boundary between Secondary and Backscattered Electrons

Electric Field Induced Hopping Conductivity: An Investigation of Electric Field-Dependent Resistivity in Polymers, S. R. Hart, J. Brunson, and JR Dennison; Electric Field Induced Hopping Conductivity: An Investigation of Electric Field-Dependent Resistivity in Polymers

Instrumentation for Measuring Radiation Induced Conductivity of Insulating Materials, J. Hodges, J. Corbridge, JR Dennison, R. C. Hoffmann, J. Abbott, A. Hunt, and R. Spaulding; Instrumentation for Measuring Radiation Induced Conductivity of Insulating Materials

Design And Construction Of A Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS), Joshua Hodges, Jeff Duce, and JR Dennison; Design And Construction Of A Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS)

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Design And Construction Of A Misse-6 Payload: State of Utah Space Environment & Contamination Study (SUSpECS), Joshua L. Hodges, Jeff Duce, and JR Dennison; 11th Rocky Mountain NASA Space Grant Consortium NASA Fellowship Symposium

Effects of Fluence and Charge Density for Pulsed, Low-Fluence Measurements of Electron Emission in Highly Insulating Materials, Ryan Hoffman and JR Dennison; Effects of Fluence and Charge Density for Pulsed, Low-Fluence Measurements of Electron Emission in Highly Insulating Materials

Measuring Auger Signatures Using a Rotatable, High-Resolution Retarding Field Analyzer Faraday Cup Detector, Jason Kite and JR Dennison; Measuring Auger Signatures Using a Rotatable, High-Resolution Retarding Field Analyzer Faraday Cup Detector

The Effect of Voltage Ramp Rate on Dielectric Breakdown of Thin Film Polymers, Anthony Thomas, JR Dennison, Steve Hart, and R. C. Hoffmann; The Effect of Voltage Ramp Rate on Dielectric Breakdown of Thin Film Polymers

2005

Methods for Determining Crossover Energies in Insulating Materials, Jonathan Abbott and JR Dennison; Methods for Determining Crossover Energies in Insulating Materials

Comparison of Methods for Determining Crossover Energies in Insulators, Jonathan Abbott, Ryan Hoffmann, JR Dennison, and Sarah Barton; Comparison of Methods for Determining Crossover Energies in Insulators

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Measuring Charge Storage Decay Time and Resistivity of Spacecraft Insulators, J. Brunson and JR Dennison; Proceedings of the 10th Rocky Mountain NASA Fellowship Symposium

Measuring Resistivity of Extreme Insulators, Jerilyn Brunson and JR Dennison; Measuring Resistivity of Extreme Insulators

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The Importance of Accurate Computation of Secondary electron Emission for Modeling Spacecraft Charging, S. Clerc, JR Dennison, and C. D. Thomson; 9th Spacecraft Charging Technology Conference

Validation of daylight charging capabilities of the SPARCS code, Sebastien Clerc, Sylvie Brosse, and JR Dennison; Validation of daylight charging capabilities of the SPARCS code

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The Importance of Accurate Computation of Secondary Electron Emission for Modeling Spacecraft Charging, Sebastien Clerc, JR Dennison, and Clint Thomson; 9th Spacecraft Charging Technology Conference

Measurements of Electrical and Electron Emission Properties of Highly Insulating Materials, JR Dennison, Jerilyn Brunson, Ryan Hoffman, Jonathon Abbott, Clint Thomson, and Alec Sim; Measurements of Electrical and Electron Emission Properties of Highly Insulating Materials

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State of Utah Space Environment & Contamination Study (SUSpECS) MISSE-6 Payload to Investigate Their Effects on Electron Emission and Resistivity of Spacecraft Materials, JR Dennison, L. Pearson, L. Davis, J. W. Burns, R. S. Hyde, James S. Dyer, Tina Andrus, Andrew Jay Auman, Jeff Duce, Tim Neilsen, and Rob Leishman; 9th Spacecraft Charging Technology Conference, Epochal Tsukuba, Tsukuba, Japan

Proposed Modifications to Engineering Design Guidelines Related to Resistivity Measurements and Spacecraft Charging, JR Dennison, Prasanna Swaminathan, Randy Jost, Jerilyn Brunson, Nelson Green, and A. Robb Frederickson; Proposed Modifications to Engineering Design Guidelines Related to Resistivity Measurements and Spacecraft Charging

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Proposed Modifications to Engineering Design Guidelines Related to Resistivity Measurements and Spacecraft Charging, JR Dennison, Prasanna Swaminathan, Randy Jost, Jerilyn Brunson, Nelson W. Green, and A. Robb Frederickson; 9th Spacecraft Charging Technology Conference

SUSpECS—State of Utah Space Environment & Contamination Study—MISSE-6, Jeff Duce, Joshua Hodge, Jacob Geddes, Andrew Auman, Sarah Barton, JR Dennison, Clint Thomson, L. Pearson, L. Davis, J. W. Burns, R. S. Hyde, and James Dyer; SUSpECS—State of Utah Space Environment & Contamination Study—MISSE-6

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Charge Storage Measuremens of Resistivity for Dielectric Samples from the CRRES Internal Discharge Monitor, Nelson W. Green, A. R. Frederickson, and JR Dennison; 9th Spacecraft Charging Technology Conference

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Experimentally Derived Resistivity for Dielectric Samples From the CRRES Internal Discharge Monitor, Nelson W. Green, A. Robb Frederickson, and JR Dennison; 9th Spacecraft Charging Technology Conference

The Effects of Electron Dose on Electron Emission and Charging in Insulators, Ryan Hoffman, Jonathan Abbott, JR Dennison, and Sarah Barton; The Effects of Electron Dose on Electron Emission and Charging in Insulators

Shy Drop: A Physics-based Activity for USU Physics Day at Lagoon, Amanda Otterstrom and JR Dennison; Shy Drop: A Physics-based Activity for USU Physics Day at Lagoon

Pulsed System for Optical Discharge of Thin-film Insulators, Jared Otterstrom and JR Dennison; Pulsed System for Optical Discharge of Thin-film Insulators

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Evolution of the Electron Yield Curves of Insulators as a Function ofImpinging Electron Fluence and Energy, Alec Sim, JR Dennison, and Clint Thomson; Proceedings of the 9th Spacecraft Charging Technology Conference

Measurement of Resistivity of Spacecraft Insulators, Shigeyuji Takahashi and JR Dennison; Measurement of Resistivity of Spacecraft Insulators

2004

Introduction to Scientific Computing: Modern Physics Handbook, Jenette Briggs, JR Dennison, D. Mark Riffe, N. Nickels, and T. E. Burns; Introduction to Scientific Computing: Modern Physics Handbook, Ver. 2.1

Electron Emission from Insulating Materials, JR Dennison; Electron Emission from Insulating Materials

Electron Emission of Insulating Spacecraft Materials, JR Dennison; Electron Emission of Insulating Spacecraft Materials

Interaction of the Space Environment with Spacecraft Materials, JR Dennison; Interaction of the Space Environment with Spacecraft Materials

Final Report: Electronic Properties International Space Station Materials, JR Dennison, C. D. Thomson, Jodie Corbridge, Alec Sim, and Jonathan Abbott; Final Report: Electronic Properties International Space Station Materials